Abstract:
:Characterization of the photosynthetic electron transport in a mutant of Spirulina platensis, generated by chemical mutagenesis, demonstrated that the electron transfer from the plastoquinone (PQ) to cytochrome b6/f was slowed. Thermoluminescence (TL) measurements suggested the presence of reversed energy flow via PQ, which resulted in an emergence of the plant-like after-glow TL band at 45 degrees C that could be enhanced by the transthylakoidal pH gradient and could be eliminated by an uncoupler, FCCP. The localization of the changes in the electron transport of the mutant cells measured by various methods revealed that the re-oxidation of the PQ pool is hampered in the mutant compared to the wild-type cells. The reduction in energy migration was localized between PQ and PS I reaction centers.
journal_name
J Plant Physioljournal_title
Journal of plant physiologyauthors
Ruengjitchatchawalya M,Kovács L,Mapaisansup T,Sallai A,Gombos Z,Ponglikitmongkol M,Tanticharoen Mdoi
10.1016/j.jplph.2004.11.012subject
Has Abstractpub_date
2005-10-01 00:00:00pages
1123-32issue
10eissn
0176-1617issn
1618-1328pii
S0176-1617(05)00044-1journal_volume
162pub_type
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